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A 34.9kg child starting from rest slides down a water slidewith a vertical height of 19.0 m.
a) What is the child's speed halfway down the slide's vertical distance________m/s
b) What is the child's speed three-quarters of the waydown_______m/s
A man pushes a lawn mower on a level lawn with a force of214N. If 25% of this force is directed downward , and 57 W ofpower is espende in pushing the mower 5.5 m , how much time isspent in pushing the mower this distance__________s
q1. a rectangular container measuring 23 cm 52 cm 61 cm is filled with water. what is the mass of this volume of water
On a touchdown attempt, a 95.0 kg running back runs toward the end zone at 3.75 m/s. What are the initial and final kinetic energies of the system
Two charged particles are located on the x axis. The first is a charge +Q at x = -a. The second is an unknown charge located at x = +3a, What are the two possible values of the unknown charge
A ball is thrown horizontally from the top of a 55 m building and lands 105 m from the base of the building, How long is the ball in the air in seconds
A car is driving 22.7m/s flat ground drives off 42.3 m high cliff. How much time does it take to reach the ground.
A proton orbits a long charged wire, making 1.80 revolutions per second. The radius of the orbit is 1.10. What is the wire's linear charge density
A proton and an alpha particle (charge = 2e, mass = 6.64 10-27 kg) are initially at rest, separated by 3.20 10-15 m. Find the speeds of the proton and alpha particle
Josh starts his sled at the top of a 3.0 m high hill that has a constant slope of 25°. After reaching the bottom, he slides across a horizontal patch of snow. How far from the base of the hill does he end up
question1while johny is travelling all along an interstate highway he notices a 143 mile marker as he passes through
a ruler is accurate when the temperature is 25deg c. when the temperature drops to -20deg c the ruler shrinks and no
A brass rod with a length of 20.0 cm is placed side by side with an aluminum rod with a length of 20.0 cm, What is the heat flow from the hot temperature to the cold temperature
Copper wire has a breaking stress of about 3×10^8 N/m2. What is the highest load that can be hung from a copper wire of diameter 0.420 mm.
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